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/*
* Copyright 2018 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef RTC_BASE_MESSAGE_BUFFER_READER_H_
#define RTC_BASE_MESSAGE_BUFFER_READER_H_
#include "rtc_base/byte_buffer.h"
namespace webrtc {
// A simple subclass of the ByteBufferReader that exposes the starting address
// of the message and its length, so that we can recall previously parsed data.
class MessageBufferReader : public rtc::ByteBufferReader {
public:
MessageBufferReader(const char* bytes, size_t len)
: rtc::ByteBufferReader(bytes, len) {}
~MessageBufferReader() = default;
// Starting address of the message.
const char* MessageData() const { return bytes_; }
// Total length of the message. Note that this is different from Length(),
// which is the length of the remaining message from the current offset.
size_t MessageLength() const { return size_; }
// Current offset in the message.
size_t CurrentOffset() const { return start_; }
};
} // namespace webrtc
#endif // RTC_BASE_MESSAGE_BUFFER_READER_H_
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